Improving the performance of roses under treatments of bud pruning and branch bending in Avalanche rose variety

Managing the structure of the rose plant plays an important role in the production of flowers throughout the year and determines the lifespan of the rose plant and affects the growth of the plant and the quality of the rose branches, including length, diameter, and weight. Rose growers bend non-productive branches with the aim of increasing light absorption and producing more photosynthetic assimilables and increasing the quality of the produced rose branches. In this study, the appropriate management of bud pruning of cut rose bushes was investigated with an emphasis on branch bending. In order to select the best plant structure architect in terms of producing the highest quality rose branches, a factorial experiment was conducted based on a completely randomized design with two treatments: bud pruning and branch pruning. Bud pruning was performed at two levels: 50% bud pruning and no bud pruning, and in the stem pruning treatment, the levels without pruning were pruned at angles of 45, 90, and 120 degrees. Factors of Photosynthesis and pot life were investigated. The results showed that branch bending (angle of 45 and 90 degrees), by increasing light absorption and producing more photosynthetic assimilates and changing their flow from the leaves of the bent branches to the branches, caused their proper growth and increased fresh weight and dry weight traits by 30 percent compared to the treatment without pruning. Bud diameter and flower branch length increased the quality of the stem from the rose branches. Also, the interaction between bud pruning and branch bending showed a positive effect on the carbohydrate content of rose branches.